Why does 1 + 1 ? 1 : 0 + 1 return 1 instead of 3?

Question

Why is 1 + 1 ? 1 : 0 + 1 equal to 1 and not 3? It's correct that it returns 3 if I wrap the expression 1 ? 1 : 0 with parentheses. But why is that needed? What is actually blocking the process to parse it correctly?

Research: operator precedence. – jonrsharpe May 01 '22 at 17:05 — jonrsharpe, May 01 '22 at 17:05
Thank you @jonrsharpe. I will read more about that. – Rafid Muhymin Wafi May 01 '22 at 17:06 — Rafid Muhymin Wafi, May 01 '22 at 17:06

score 0 · Answer 1 · answered May 01 '22 at 17:07

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It is evaluating (1 + 1) ? 1 : (0 + 1).

answered May 01 '22 at 17:07

Jordan Bonecutter

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Please refrain from answering questions which have obviously been asked before. – Heretic Monkey May 01 '22 at 17:08

score 0 · Accepted Answer · answered May 01 '22 at 17:13

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Because js first calculate 1 + 1 and after that check RESULT is true? if it is true, select 1.

1+1 is the truthy result

The falsy values in JavaScript are 0, 0n, null, undefined, false, NaN, and the empty string ""

answered May 01 '22 at 17:13

thisisnabi

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Why does 1 + 1 ? 1 : 0 + 1 return 1 instead of 3?

2 Answers2